1.2.8.10 Indirect mode of suppression ........................................................................26 Fungicide or fungistatic properties of Phi.........................................................48 Colony diameters on H3PO3, H3PO4, KH2PO3, KH2PO4 and KOH amended PDA ..........................................................................................................................50 4.4.3.3.1 Treatment effect on root to shoot ratios of L. perenne growing in P sufficient and P deficient rootzones ............................................................................153 4.4.3.3.2 Treatment effect on root to shoot ratios of P. annua growing in P sufficient and P deficient rootzones ............................................................................154 4.4.3.4 4.4.3.5 4.5 4.5.1 Treatment effect on tissue P levels of L. perenne and P. annua growing in a P sufficient rootzone....................................................................................154 Treatment effect on tissue P levels of L. perenne and P. annua growing in a P deficient rootzone........................................................................................158 Phi take up in turfgrass ...................................................................................161